import Vue from 'vue'
import VueRouter from 'vue-router'
import Login from '../components/Login.vue'
import Compute from '../components/Compute.vue'
import Home from '../components/Home.vue'
import Welcome from '../components/Welcome.vue'
import User from '../components/user/User.vue'
import Rights from '../components/power/Rights.vue'
import Roles from '../components/power/Roles.vue'
Vue.use(VueRouter)

const routes = [
  { path: '/', redirect: '/login' },
  { path: '/login', component: Login },
  { path: '/compute', component: Compute},
  { path: '/home', component: Home,
  redirect: '/welcome',
  children:[{path:'/welcome',
   component: Welcome},
   { path: '/users', component: User},
   { path: '/rights', component: Rights},
   { path: '/roles', component: Roles},
  ]},
]

const router = new VueRouter({
  routes
})
//配置路由守卫
//to是要访问的路径
//from表示从哪个路径跳转而来
//next是一个函数,放行
router.beforeEach((to, from, next)=>{
  if(to.path === '/login'){return next()};
  const tokenStr = window.sessionStorage.getItem('token');
  if(!tokenStr){
    return next('/login');
  }
  next();
})
export default router
